Michael Gottesman f093a8910d [analysis] Add a new form of verification SILAnalysis::verifyFull(). ...

This is a verification routine that is only invoked in PassManager
destructors. I am going to use this to ensure that the
PassManagerVerifierAnalysis only runs at such points (even when sil-verify-all
is enabled) since it is too expensive to run otherwise.

NOTE: The default implementation of verifyFull in this commit is a no-op. I
wanted to have verify() be the default implementation of verifyFull(), but I do
not have more time to invest in this and it seems to catch /real/ bugs, albeit
bugs unrelated to pass manager notification verification. Instead I am going to
file an SR for someone to look at it since I need to move on from this work back
to semantic SIL. At least we will not have notification failure issues anymore
and thus a large correctness issue in the compiler has been fixed. Forward
progress!

rdar://42301529

2018-08-16 17:25:32 -07:00

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